EQUATIONS FOR FLOW THROUGH ORIFICES
EQUATIONS FOR FLOW THROUGH ORIFICES ... Where: Q is the flow rate in SCFM Pu is the upstream pressure going to the orifice or hole ... WHEN GASES OTHER THAN AIR ARE USED MULTIPLY THE ABOVE Q BY: Helium gas 2.6 Nitrogen 1.0 Natural gas 1.3 Carbon dioxide 0.8
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